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Tool

a technology of reinforced substrate and abrasive wheel, which is applied in the direction of gear teeth, gear teeth, application, etc., can solve the problems of high speed and circumferential tensile, and achieve the effects of reducing the cost of raw materials of fiber reinforced mesh or abrasive wheel, reducing the consumption of resin, and increasing spa

Inactive Publication Date: 2015-03-19
SAINT GOBAIN ABRASIVES INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent aims to provide a fiber reinforced mesh for abrasive tools that uses less resin materials and addresses the safety standards set forth by the prior art. The invention also aims to reduce the cost and environmental impact of the raw materials used in the production of the abrasive wheel. The technical effects include reducing the burst speed of the abrasive wheel, which is related to the resin content of the reinforced mesh, and eliminating the requirement for a high resin content to ensure the working functions of the abrasive wheel. Additionally, the invention reduces the amount of toxic volatile gases released during production.

Problems solved by technology

Those skilled in the art have such a technical prejudice because: an abrasive wheel, especially a thin abrasive wheel, in high-speed cutting or grinding operation, will suffer a circumferential tensile stress as a result of the centrifugal force, and thus an object rotating at a high speed easily bursts.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0051]Firstly, cutting wheels with a size of 180×3×22 (mm) were tested. The structure of the cutting wheel is as shown in FIG. 3. The cutting wheel comprises a grinding layer 10 and two fiber reinforced mesh layers 20-1 and 20-2 are respectively provided on the upper and lower surfaces on the grinding layer 10. According to the specifications as set forth in a national standard of the People's Republic of China GB / T2485-2008 Technical Conditions for Bonding Abrasive Tools, the burst performance of an abrasive wheel shall be tested in accordance with a rotation test method on abrasive wheels as provided in a national standard of the People's Republic of China GB / T2493-1995 and shall conform to the related requirements.

[0052]Thus, the abrasive wheel of this embodiment was tested according to the national standard GB / T2493-1995, where the abrasive wheel was installed on a rotation testing machine (a POGGI rotation machine from Italy, type: PV22, maximum rotation speed: 22000 rpm) as sp...

example 2

[0054]Cutting wheels with the same size of 180×3×22 (mm) were tested. The cutting wheels in Example 2 are different from those in Example 1 and the cross-sectional structure of this group of cutting wheels is shown in FIG. 2. The grinding layer of the cutting wheel is divided into a first grinding layer 10-1 and a second grinding layer 10-2, and the cutting wheel comprises a fiber reinforced mesh 20 between the first grinding layer and the second grinding layer. The tests include a rotation test and a grinding ratio measurement test. The conditions of the rotation test are the same as those in Example 1, and according to the tests, all tested cutting wheels passed the test and changes in the resin weight per unit area of the reinforced mesh did not affect the grinding ratio of the cutting wheel.

TABLE 2Resin weight per unit area ofRotationGrindingfiber reinforced mesh (g / m2)testratio3.2Pass1.019.6Pass1.0316Pass1.0422.4Pass1.0228.8Pass1.0635.2Pass1.0641.9Pass1.0548Pass1.0456.9Pass1.03...

example 3

[0055]The inventor further tested angle grinding disks with a cross-sectional structure as shown in FIG. 4. The angle grinding disk has a size of 180×6×22 (mm), and comprises, along the direction as shown in FIG. 4 from top down, a first fiber reinforced mesh 20-1 overlaid on an upper surface of the grinding layer, a second fiber reinforced mesh 20-2 provided inside the grinding layer, and a third fiber reinforced mesh 20-3 partially overlaid on a lower surface of the grinding layer. The tests include a rotation test and a grinding ratio measurement test. The conditions of the rotation test are the same as those in Example 1. As shown in Table 3 hereinbelow, all the angle grinding disks passed the tests and changes in the resin weight per unit area of the fiber reinforced mesh did not affect the grinding ratio of the angle grinding disk.

TABLE 3Resin weight per unit area ofRotationGrindingfiber reinforced mesh (g / m2)testratio3.2Pass11.99.6Pass12.516Pass12.322.4Pass12.428.8Pass12.435....

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Abstract

The present invention discloses an improved tool, which comprises a reinforced member; and a resin layer is coated on the reinforced member, wherein the weight of the resin layer per unit area of the reinforced member may be less than 90 g / m2. The weight of the resin layer may be less than 15% of the total weight of the improved tool. The present invention dramatically reduces the production costs while maintaining the application performance unchanged.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a reinforced substrate and an abrasive tool provided with the reinforced substrate, and more particularly to a fiber reinforced mesh for use in abrasive wheels, as well as a thin abrasive wheel comprising the fiber reinforced mesh.BACKGROUND OF THE INVENTION[0002]Bonding abrasive tools, which usually refer to abrasive wheels, generally consist of an abrasive substrate layer or grinding layer, and a fiberglass reinforced mesh (also called a “fiber reinforced mesh”). Among them, a common effective means to improve the toughness of abrasive wheels, especially resin abrasive wheels, is to use a fiber reinforced mesh as a reinforcement substrate. The fiberglass reinforced mesh functions to improve the toughness of the abrasive wheel to ensure safe operation, so that in high speed rotation, the abrasive wheel will not burst as a result of the centrifugal force to threaten the life and safety of operators. Therefore, the fibergla...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B24D3/28B24D7/04B24D5/04
CPCB24D3/28B24D7/04B24D5/04B24D3/20
Inventor NIE, DASHIYU, XIANGBIN
Owner SAINT GOBAIN ABRASIVES INC
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